4-3 Gandars Associates produces carburetors for small engines and uses a normal Unit Cost; Plantwide costing system. The following data are available for 2006: Overhead Rate; Budgeted: Applied Overhead Overhead $4,500,000 LO1, LO2 Machine hours 187,500 Direct labor hours 600,000 Actual: EXCEL Units produced 750,000 Overhead $4,466.250 Prime costs $6,750,000 Machine hours 187,875 Direct labor hours 585,000 Overhead is applied on the basis of direct labor hours. Required 1. What is the predetermined overhead rate? 3. Was overhead overapplied or underapplied, and by how much? 4. What is the unit cost for the year